I need to rework my hodge-podge of compressed air hoses and quick-connect fittings and wondered, is there a preferred direction for fittings? For instance which direction should the male fitting point, toward the air flow, or away from the air flow? Regards, Harry Wade Nashville Tennessee MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.